Perhaps you should try some spelling variations:
tham nang » nham nang, tham lang, tham nhung
pham chuc » pham duc, pham huu, kham chua
hanh hai » thanh hai, nhanh hai, hang hai
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
chuc va » thuc va, thuc vat
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (co sach)) tham nang cao hoi. hieu ve pham chuc va hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) tham nang cao hoi. hieu ve pham chuc va hanh hai cua te.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (co sach)) tham nang cao hoi. hieu ve pham chuc va hanh hai cua te*.